Figure 2 in Cryptic variation and the tragedy of unrecognized taxa: the case of international trade in the spiny turtle Heosemys spinosa (Testudines: Geoemydidae)

Figure 2. Side-by-side comparisons showing variation in relative size, iris colour, and light versus dark shell coloration among samples of Heosemys spinosa. The images show some of the variation present among six individual turtles, but are not meant to indicate that there two discrete groups of turtles in this collection.